Paper-making machinery.



PATEN'TED FEB-'11, 1908 R. B. WOLF & H. E. TIDMARSH.

PAPER MAKING MAGHINERY.-

APPLICATION FILED JULY 14.1906.

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the art to which it appertains to make and 5' the stock vat and cylindermold of a wet UNITED STATES PA ENToFFIoE.

ROBERT B. WOLF AND HARRYE. TIDMARSH, OF SANDY HILL, NEW YORK.

PAPER-MAKING MACHINERY.

Specification of Letters Patent.

Patented Feb. 11, 1908.

Application filed July 14. 1906- SBriBJ NO- 326.209-

To all whom it may concern."

Be it known that we, ROBERT B. WOLF and HARRY E. TIDMARSH, both citizensof the United States, both residing at Sandy Hill, county of Washington,State of New York, have invented certain new and useful Improvements inPap er-Making Machinery; and we do hereby declare the following to be afull, clear, and exact description of the in vention, such as willenable others skilled in use the same.

The invention relates to paper making machines, it having moreparticular referenceto that type of machines known as pulp presses, wetmachines and the like.

The particular object in view'is to provide an extremely simple andeflicient means for preventing leakage of stock from the stock vat tothe white-water receptacle along the sleeve or sleeves, with which thecylinder mold or screen is .provided and through which the water, drawnthrough the cylinder mold or screen, passes to the white-waterreceptacle.

In the accom anying drawing, which illustrates the app ication of theinvention to machine, the single figure represents a longitudinalsectional view of the stock vat, showing the cylinder mold in elevation.

In the articular embodiment of the invention il ustrated in the drawing,a represents .the stock vat of a standard wet machine, which is adaptedto receive the ground wood pulp, sulfite pulpor paper pulp, admixed withlarge quantities of water and to deliver thepulp, largely freed fromwater, to the felt, not shown, which runs in contact with the surface ofthe cylinder mold b, and thence over the ordinary couch-roll, as will bereadily understood by those skilled in the art. It is desired to havethe white-water, which passes through thewire cloth, with which thecylinder mold is covered, free from pulp or paper fibers, as largequantities of it cannot be used again, and the'fibers it holds taclewhich effectively traps any leakage or seepage, from either the stockvat or the white-water chamber and prevents any ad mixture of thematerials contained in the vat and chamber.

In the present invention, the essential object in view is also toobviate thisleakage, but without the necessity of providing anintermediate chamber between the stock vat and the white-waterreceptacle.

lish this result, there'is provided an annuar flange or collar formed onthe'sleeve or sleeves of the cylinder mold, the same serving to preventleakage from the stock vat following the sleeve further than the flangeor collar, the leakage or seepage being thrown off or directed by theflange or collar into-a suitable spout or receptacle located beneath thesaid annular flange. In order to reduce as much as possible this leakagefrom the stock vat along the sleeve to the annular flange or collar,suitable acking means is provided between the end walls of the vat andthe sleeves of the cylinder mold, through To accom-,

I which the white-water is discharged from the The stock vat a ispreferably of rectangular form, and of suflicient size to receive thecylinder mold b, which is adapted to deliver into suitable spouts 0, oneat each end of the vat, the white-water drawn through the meshes of thescreen surface of the cylinder mold, said white-water passing from saidcylinder mold by way of thehollow axial sleeves (1. These spouts c areso constructed as topartially encompass the sleeves in order to reventany loss of material, and the .spouts ave suitable connections leadingto the chambers or receptacles which are used for collecting and holdingthe white-water delivered to the spouts from the cylinder mold by way ofthe axial sleeves (1. Each of the sleeves d, at the point where it joinsthe head of the cylinder mold, is provided with an off-set shoulder 0,between which and the collars f, (which in the present inventionconstitute the end walls of the stock vat), is an annular packing ring9, which may, if desired, be made up of a series of sections tocompletely fill the space between said shoulders and said walls and in alarge measure prevent leakage of stock from vat a past the shoulder eandalong the sleeve (1. In order to insure a still more eflectivesealing of the joint between the end of the cylinder mold and the endwall of the vat, there is provided a packing sleeve 72, of felt whichencircles and gages the peripheral edges of the packing ring 9 and theshoulder e.

Upon each of the sleeves, between the end walls of the stock vat a andeach of the spouts c, is formed an annular flange or collar i preferablymade integral therewith, although not necessarily so, said flange orcollar serving to throw off from said sleeve any leakage or seepagewhich might work its way along the sleeve from the stock vat. In orderto catch the drippings or leakage from the flange or collar, and also tocollect any of the leakage past the shoulder e, packing sleeve h andpacking ring 9, which does not follow along the axial sleeves, there isprovided a spout j, as shown, which may be connected by means of asuitable pipe to a stock chest or other receptacle from which the pulpmay be again delivered to the stock vat a. This spout is locatedadjacent the end walls of the vat and directly beneath the annularflange '1), and it is also to be noted that the same is similar inconstruction to the white-water spout c, in that it partiallyencompasses the sleeve at this point in order to prevent any loss of thestock.

Reference has been made to the collars as constituting the end walls ofthe stock vat a. These collars f, f are each divided along a horizontalline and provided with a circular opening to embrace the sleeve d, thetwo sections of each collar being fastened together around the sleeve sothat the collars may be removed and inserted with the cylinder mold.Each of the collars are held against suitable guides or cleats it" byany desirable fastening means, so that when the cylinder is in place,leakage past the edge of the collars is prevented.

As will be readily understood, the cylinder mold is built around theusual rotating shaft Z, which is supported in suitable bearings mformedupon the standards or suports n located a suitable distance from theends of the stock vat.

It will be apparent from the above description, that the apparatus usedis very efficient, and one that will absolutely prevent any leakage ofstock from the stock vat into the spout c, which leads to the receptacleused for holding the white-water, except, however, such small quantitiesas might pass through the wire cloth of the cylinder mold, for thereason that any of the stock which might leak past the joint between theshoulder 6, the packing sleeve h and the packing ring g, and followalong the sleeve (2, will be thrown off from the sleeve, or conducted,by the annular flange or collar i, into the spout j and carried backinto the stock vat or some other stock chest provided for that purpose.

It will also be apparent that, while the invention has been shown anddescribed as applied to both ends of the stock vat and cylinder mold, itis nevertheless true that it may be desired to blank off one end of themold, 'thereby dispensing with the arrangement of sleeve, packing rings,and the spouts c and j at that end, and applying the invention to theother end of the apparatus only. Furthermore, it will be understood thatthe details of construction and the relative arrangement of parts may bevaried, without departing from the spirit and scope of the invention, asfor example, instead of the particular packing means to prevent leakagefrom the stock vat along the cylinder sleeves, packing glands orstu'fiing boxes of the ordinary kind may be employed. Also instead ofproviding the spouts c and their connections leading to the white-waterreceptacles, the white-water receptacles could be built around the endsof the sleeves and adapted to receive the white-water, by way of thesleeves from the cylinder mold, directly therefrom. I l

WVhat we claim is 1. The combination of a stock vat, a cylinder moldhaving an axial sleeve, a whitewater receptacle in communication withthe interior of the cylinder mold. by way of said. sleeve, a spout orreceptacle for collecting the leakage from said vat, and means fordirecting any leakage ,which follows along the sleeve into said spout orreceptacle.

2. The combination of a stock vat, a cylinder mold having an axialsleeve, a whitewater receptacle in communication with the interior ofthe cylinder mold by way of said sleeve, and means on said sleeve forpreventing the leakage from said vat following the sleeve past saidmeans.

3. The combination of a stock vat, a cylinder mold having an axialsleeve, a whitewater receptacle communicating with the the stock vat andsaid white-water receptacle, and a packing collar or washer surroundingsaid sleeve and engaging the wall of the stock vat and the shoulder ofthe cylinder respectively.

5. The combination of a stock vat, a cylinder mold therein having anaxial sleeve and a shoulder between the sleeve and the cylinder end, awhite-water receptacle. communicating with the interior of the cylindermold by way of said sleeve, means on said sleeve for preventing leakagebetween the stock vat and said white-water receptacle, a packing collaror washer surrounding said sleeve and engaging the wall of the stock vatand the shoulder of the cylinder respectively, and a packing sleeveengaging the packing collar and shoulder of the cylinder respec tivelyand overlying the joint between the two.

6. The combination of a stock vat, a cylinder mold therein having anaxial sleeve, a white-water receptacle communicating with the interiorof the cylinder mold by way of said sleeve, and an annular flange orcollar on said. sleeve for preventing the leakage from said vatfollowing the sleeve past said flange or collar.

7. The combination of a stock vat, a cylinsaid stock vat following thesleeve past said flange or collar, and a spout or receptacle forcollecting the said leakage.

8. The combination of a stock vat, a cylinder mold therein having anaxial sleeve, a white-water receptacle in communication with theinterior of the cylinder mold by way of said sleeve, a spout orreceptacle for collooting the leakage from said vat, an annular flangeor collar on said sleeve for directing the leakage along the sleeve fromthe stock vat into the spout or receptacle, and a connection between thespout and a stock chest or other storage receptacle for discharging thecollected leakage from the stock vat.

In testimony whereof we affix our signatures, in presence of twowitnesses.

ROBERT B. WOLF. HARRY E. TIDMARSH.

Witnesses:

W. L. SAWYER, GEO. A. INGALLS.

